An expert advisor Based on Manual input levels

I will be providing buyers and seller zone at input

example : I will provide you  number of levels B1 S1 , B2 S2 , B3 S3 , B4 S4 , B5  S5. 

Lets say market price is in between s2 and b3 ( It may be in between any of 2 lines

need to write a EA on 15 min chart

buy If new candle open price is above B3** and its Take profit should be S2** and stop loss should be S3**

Sell if new candle open below S2** and its take profit should be B3** and Stop loss should be B2**

Lot size should be calculate as per input taken on interface Input lines also to be got as input

Example : The input value of 1.10750 ia entered by client 

Example2: For BUY 

For the Manul calculation I will be providing the calculated P/L calculation upon chat